Spring-motor.



E. J. SCOTT. SPRING MOTOR.

APPLICATION FILED $EPT. 24, 1914.

1,121,944. Patented 1380221914,

KUHHHIIHHI lllllllll 33% 2/ 34 5 In 1 6 I lilm'l ulllllll g I II /0 I'll," i 1 z 1 I i 9 I I I 35 g? 5% a. Z www through its side walls for receiving the shaft EPHR-IAM J. SCOTT, OF PROVIDENCE, RHODE ISLAND.

SPRING-MOTOR.

Specification of Letters Patent.

Patented nee. 22, 1914.

Application filed september 24, 1914. Serial No. 863,285.

To all whom it may concern Be it known that I, EPI-IRIAM J. Soor'r, a citizen of the United States, and resident of the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Spring- Motors, of which the ,following is a specification.

This invention relates to spring winding clutch mechanism for toys and the like, and has for its object to provide such a clutch mechanism of extremely simple and inexpensive construction and yet strong and durable and also practical in its operation.

With this and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claim.

In the accompanying drawings: Figure 1- is a plan view showing the mechanism inclosed between the walls of the casing. Fig. 2- is a sectional plan view of the mechanism. Fig. 3- is the winding key, on the shaft of which the mechanism is mounted. Fig. 4cis a front view of one of the clutch members. Fig. 5- is a sectional side elevation of this clutch member. Fig. 6- is a view of the blank as cut from sheet stock from which the drum or barrel is formed. Fig. 7 shows the arms of this blank bent up to form the drum on which the driving spring is wound. Fig. 8- is a front view of the drum member. Fig. 9- is a side elevation of the driving gear. Fig. l0 is a detail in perspective of the casing between the walls on which the mechanism is mounted. Fig. 11 is a front view of the spring whose resilient fingers press the driving gear into contact with the teeth of the clutch member.

Referring to the drawings 10 designates the casing which may be of any suitable material and is constructed preferably in a rectangular form having apertures 11 portion 13 of the winding key 14 and apertures 12 for receiving the jack shaft 15 on which the pinion 16 is mounted. A. drum 17 is formed preferably by stamping a blank from sheet stock having a plurality of arms 18 as illustrated in Fig. 6. These arms are bent forward as illustrated in Fig. 7 and in the center of the plate is formed a square hole 20 for the reception of the correspondingly shaped shaft portions of the key 14:. A clutch member 21 is also formed by drawing up a disk of sheet metal into cup form, the rear wallof the cup being provided with a plurality of perforations as at 22 for the reception of the end portions of the corresponding arms 18 which are riveted or bent over therein, this said wall being'also provided with a square opening 23 through which the body of the key is passed. The edge portion of this clutch member is provided with ratchet teeth at. The driving gear 25 of this mechanism is provided with a central circular bore to turn freely on the key shaft 13. This gear is also provided with a plurality of apertures 27 adapted to register with and receive the teeth 24: of the clutch member 21 through which the gear is driven, and a flat spring 28 having a central aperture 29 and resilient fingers 37 positioned between the wall 30 and this gear is arranged to press the gear into contact with the teeth of the clutch member. One end 31 of the clutch spring 32 is secured to one of the arms 18 of the drum' and its opposite end 33 is connected to the end wall 3a of the casmg.

In assembling this mechanism 1 connect the drum to the clutch member, and connect one end of the coil spiral spring to the drum. This mechanism together with the driving gear and spring 28 are then placed between the side walls 30 and 35 of the casing. The squared shaft portion 13 of the key is then passed through these members tightly fitting the hole 20 in the wall of the drum and the hole 23 in the wall of the clutch member thereby providing a double ring for the drum to firmly support it against all of the strain due to winding the spring and operating the mechanism. This shaft also passes loosely through the gear 25 and the spring 28 and receives its second bearings in the wall 30 of the casing. The outer end 33 of the spring is then passed through the aperture 36 in the casing wall and secured thereto.

It will be noted that by this construction, this device is extremely simple yet strong and durable and owing to its simple con struction is quite inexpensive to make which is a most essential feature in mechanical toys in order to enable them to be produced at a marketable figure.

The jack shaft 15 which is driven through 'r ()FFTCE.

the pinion 16 may he provided with crank ends or any other means of producing motion to the parts of the toys.

To start the mechanism in operation it is only necessary to hold the jack shaft or mechanism connected thereto, while the spring is being wound by the rotating of the key.

I claim:

A spring motor comprising a casing having Walls between which the operating mechanism is mounted, a coil spring having one end fixed to one of said walls, a winding key having a shaft with hearin s in said Walls, a spring Winding drum mounted on and arranged to be rotated by said shaft and Copies of this patent may be obtained for having ratchet teeth on one edge thereof, a driving gear receiving a hearing on said shaft and having apertures therein engaged by said drum teeth, and a positioning spring between one of said walls and said gear or pressing the latter into engagement with said teeth, whereby the turning of the key rotates the drum to wind the coil upon it to impart motion to said gear.

In testimony whereof I aifix my signature in presence of two witnesses.

EPHRIAM J. SCOTT. WVitnesses HOWARD E. BARLOW, A. F. MAcnEADY.

Washington. D. C. 

